Let's divide 87931117 by 646
The aim is to understand the frequency of 646 in 87931117.

Let's proceed to step 1:
646 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 646

Advancing to step 2:
646 can be fit into 87 0 times, resulting in a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Include the next digit (9) from the dividend after 87, then repeat: 879 / 646

Let's proceed to step 3:
646 goes into 879 1 times with a remainder of 233.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 646 from 879, we get 233.
Bring next digit (3) of the dividend behind the 233 and repeat the process: 2333 / 646

On to step 4:
The number 646 fits into 2333 3 times, leaving a remainder of 395.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtracting 1938 from 2333 leaves us with 395.
Bring next digit (1) of the dividend behind the 395 and repeat the process: 3951 / 646

Advancing to step 5:
If we divide 3951 by 646, we get 6 and a remainder of 75.
The number 6 becomes the next digit in our result. 
Result so far: 136.0
Subtract 3876 from 3951 to get 75.
Fetch the next digit (1) from the dividend, attach it to 75 and continue: 751 / 646

Advancing to step 6:
646 goes into 751 1 times with a remainder of 105.
The number 1 becomes the next digit in our result. 
Result so far: 1361.0
If we subtract 646 from 751, we get 105.
Grab the next digit (1) from the dividend, add it to 105, then carry on: 1051 / 646

Step 7:
If we divide 1051 by 646, we get 1 and a remainder of 405.
Use 1 as the next digit of our solution. 
Result so far: 13611.0
Deduct 646 from 1051 and we're left with 405.
Bring next digit (7) of the dividend behind the 405 and repeat the process: 4057 / 646

Let's proceed to step 8:
If we divide 4057 by 646, we get 6 and a remainder of 181.
Put 6 as the next digit of the answer. 
Result so far: 136116.0
If we subtract 3876 from 4057, we get 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Going ahead to step 9:
The number 646 fits into 1810 2 times, leaving a remainder of 518.
Record the quotient 2 as the next digit in the result. 
Result so far: 136116.2
If we subtract 1292 from 1810, we get 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Moving on to step 10:
646 can be fit into 5180 8 times, resulting in a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 136116.28
Subtracting 5168 from 5180 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
646 goes into 120 0 times with a remainder of 120.
Write down 0 as next digit of the result. 
Result so far: 136116.28
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 12:
If we divide 1200 by 646, we get 1 and a remainder of 554.
The number 1 becomes the next digit in our result. 
Result so far: 136116.2801
Subtracting 646 from 1200 leaves us with 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Moving on to step 13:
646 goes into 5540 8 times with a remainder of 372.
Use 8 as the next digit of our solution. 
Result so far: 136116.28018
Subtracting 5168 from 5540 leaves us with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Moving on to step 14:
646 can be fit into 3720 5 times, resulting in a remainder of 490.
Write down 5 as next digit of the result. 
Result so far: 136116.280185
If we take 3230 away from 3720, we end up with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Let's proceed to step 15:
646 can be fit into 4900 7 times, resulting in a remainder of 378.
Put 7 as the next digit of the answer. 
Result so far: 136116.2801857
If we take 4522 away from 4900, we end up with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Going ahead to step 16:
3780 divided by 646 is 5 with a remainder of 550.
Write down 5 as next digit of the result. 
Result so far: 136116.28018575
If we take 3230 away from 3780, we end up with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

The final outcome is 136116.28018575, with a leftover of 5.5e-07.